Whoever did the math on Qunitessential Fighter must have forgotten to carry a 1.
It costs 2,000 gp to raise a masterwork weapon to gain +1 to hit (which overlaps with the masterwork bonus, thus it gains nothing) and +1 damage.
Pricing a non-magical upgrade at 150 gp is a poor design decision. +1 damage is essentially 1 higher damage dice (2-7 ~1-8) which can also cost an exotic weapon feat sometimes.
Technik
It costs 2,000 gp to raise a masterwork weapon to gain +1 to hit (which overlaps with the masterwork bonus, thus it gains nothing) and +1 damage.
Pricing a non-magical upgrade at 150 gp is a poor design decision. +1 damage is essentially 1 higher damage dice (2-7 ~1-8) which can also cost an exotic weapon feat sometimes.
Technik